Paper box machine



Aug. 8, 1939.

M. H. SIDE'BOTHAM 2,168,751

PAPER BOX MACHINE Filed March 1, 1957 5 Sheets-Sheet 1 fm mfor W I 2 m g- 8, 1939- M. H. SIDEBOTHAM 2,168,751

PAPER BOX MACHINE Filed March 1, 1937 5 Sheets-Sheet 2 g- 3, l939- M. SIDEBOTHAM 2,168,751

* I PAPER BOX MACHINE Fi led March 1, 1957 5 Sheets-Sheet s [/7 1 60 far g- 8,1939- M, H. SIDEBOTHAM 2,168,751

PAPER BOX MACHINE Filed March 1, 1937 5 Sheets-Sheet 4 [Wm/0r db M. H. SIDEBOTHAM PAPER BOX MACHINE Aug. 8, 1939.

5 Sheets-Sheet 5 Filed March 1, 1937 l l f l I l F/g. m

f0 1/6/7 for Patented Aug. 8, 1939 UNITED STATES PATENT oFFIsE 5 Claims.

An'object of my invention is to produce a machine, of simple construction, by means of which set-up boxes may be made rapidly, from prepared blanks, without the use of completely automatic .5 machinery.

Another object of my invention is to produce a machine ofsimple construction, which may be quickly adjusted to make boxes of different s1zes.

Other more specific objects and advantages of the invention will be apparent to persons skilled in theart asthe same becomes better understood by reference to the following description, taken in connection with the accompanying drawings, in which I have illustrated one practical embodiment of the invention, and Wherein Figure 1 is a. plan view of the machine.

Figure 2 is a front elevation of the machine.

Figure 3 is an elevation of the left hand side of the machine.

Figure 4 represents a Vertical section on line -4-4 of Figure 1.

Figure 5 represents a horizontal section on line 5-5 of Figure 2.

Figure 6 represents a vertical section on line 66 of Figure 1'.

Figure 7 represents a vertical section on line 'I-'I of Figure 1. V

Figure 8 represents a plan view of the blank from which the box is made.

Figure 9 is a side elevation of the blank showing the side wall flaps of the blank bent downward.

Figure 10 is an end elevation of Figure 9.

Figure 11 i sja side elevation of the blank showing the condition thereof after the side Walls have been folded into'position.

Figure 12 is an end elevation of Figure 11.

Figure 13 is a side elevation of the blank show- 40 ing the condition thereof after the end walls and the end wall extensions have been bent down- Ward.

Figure 14 is an end elevation of Figure 13.

Figure 15 is a side elevation of the completed box. I

Figure 16 is an end elevation of the completed box.

Figure '17 is a perspective view of the completed box, shown in Figures 15 and 16, tilted upward soas to show a portion of the interior thereof.

Similar numerals refer to similar parts throughout the several views.

Referring first to Figures 1, 2 and 3, the different-parts ormembers' of the machine are mounted 'on asuitable frame I.

Mounted in frame I is a power shaft 2 which is caused to rotate by any suitable power means not necessary to describe.

The machine is comprised of three units, an adhesive applying device, an adhesive tempering 5 table and a pressing mechanism.

The adhesive applying device is operated from power shaft 2, secured to said power shaft is a bevel gear 3(Figs. 3, 4 and 5) meshing with bevel gear 4 secured to shaft 5 journalled in frame I. 10 Secured to said shaft 5 is a pulley 6 (Figs. 4, 5 and 6) which drives pulley I by means of belt 8. Secured to pulley l is a shaft 9 journalled in adhesive pot I0 mounted on frame I. Secured to said shaft 9 is an adhesive applying roll II and a gear I2 (Fig. 6). Meshing with gear I2 is a gear I3 secured to shaft I4 journalled on adhesive pot II]. Secured to said shaft I4 is a pressing roll I5. Secured to the outside of the adhesive pot I0 is a guide bar Hi.

The adhesive tempering table comprises a shaft I I journalled in frame I (Figs. 4 and 6) a thrust collar I8 secured to said shaft H; a table frame I9 secured to said shaft IT by means of plates 20 and collars 2|; box racks 22 secured to table frame I9 by means of brackets 23; and adjustable guides 24 adjustably secured to box racks 22 by means of bolts 25. Slots 26 (Fig. 1) are provided in box racks 22 to permit adjustment of guide 24 to conform with different sizes of boxes. Cut out portions 21 are provided in said box racks 22 to facilitate formation of the box.

A pressing mechanism is provided for simultaneously pressing the ends of the box to quickly set the adhesive. Power shaft 2 (Fig. 5) journalled in frame I, conveys the power necessary to operate the said pressing mechanism. Secured topower shaft 2 is a pulley 28 (Fig. 5) which by means of belt 29 drives fly-wheel 30. Secured to said fly-wheel 30 is a shaft 3I journalled in said frame I. Pinion 32 secured to shaft 3| meshes with gear 33 (Figs. 4 and 5) which has a recess 34 (Fig. 4) in the hub thereof, said gear 33 being mounted to turn free on pin 35 supported in frame I. Rotatably mounted on pin 35 is an eccentric 36 having a slot 31 cut in the periphery of the hub thereof. A recess 38 is provided in the said eccentric 3B. Retained in said recess 38 is a spring 39 and a driving pin 40 having a slot II out therein. Eccentric 36 has operatively mounted at its outside periphery a bushing (Fig. 5) and an eccentric arm 43. vOperatively connected to the upper end of said eccentric arm 43 is a pin 44 (Figs. 4 and '7); secured thereto are'connecting links 45 and '46.

Said connecting links 45 and 46 are connected at their outer ends by means of pins 41 to pressure jaws 48 slidably mounted in frame I. Removably secured to said pressure jaws 48 are formers 49 (Figs. 1, 2 and '7). Secured to said frame I by means of bolts 50 are buttress yokes Removable spacer blocks 52 are provided between gauge blocks 53 and said buttress yokes 5|. Said gauge blocks 53 are secured to frame I by means of bolts 54 in elongated holes 55. Secured to said gauge blocks 53 (Fig. 1) are brackets 56 to which box guide bars 51 are removably fastened by means of screws 58 (Fig. 3). A stop block 59 (Figs. 1, 4 and 7) is provided to limit the movement of pressure jaws 48.

A pair of spring actuated arms is provided to aid in discharging the box from the pressure mechanism after the box ends have been pressed. This mechanism comprises, brackets 60 (Figs. 1, 3 and 4) secured to frame l; pins 6| mounted in said brackets 68; arms 62 hinged on said pins 6|; spring bolts 63; and springs 64.

The operation of the pressing mechanism is controlled by foot pedal 65 (Figs. 2, 3 and 5) secured to shaft 66 rotatably mounted in frame I. A tension spring 61 (Figs. 2 and 4), one end of which is fastened to said foot pedal 65 and the other end fastened to frame I serves to hold the foot pedal in upward position. Secured to said shaft 66 is a cam lever 68 (Figs. 4 and 5) having fastened hereto a cam 68 for holding driving pin 40 out of engagement with gear 33 except when said foot pedal 55 is depressed.

Referring to Figures 8 to 1'7 inclusive, I have illustrated a method of making set-up wall boxes from a paper blank prepared to have a bottom 10 (Fig. 8) side walls H, end walls 12, end wall extensions 13 and side wall flaps l4. Creased lines are represented by dash lines l5, l6, and 11. In making the box from the blank described, side wall flaps 14 are bent downward as shown by Figures 9 and 10, thereafter adhesive is applied to the underside of the end walls 12 and end wall extensions 13, the side walls are then bent downward to the position shown in Figures 11 and 12, the partly formed box is then placed in a rack which holds the sidewalls H in position while the adhesive is being tempered, after which the end walls 12 are bent downward and the end wall extensions 13 are folded against the side wall flaps T4 at the inside ends of the box as shown in Figures 13, 14, 15, 16 and 1'7.

While the invention includes the combined instrumentalities above mentioned, I wish it to be understood that I consider the aforesaid means not only combinatively novel, but insofar as I am aware, certain of the devices going to make up such means are new in less combinations than the whole and some capable of individual use, as will more clearly appear hereinafter.

Efficient operation of my improved machine requires the services of two operators. One operator to partly fold the blank and feed it through the adhesive applying mechanism and form the box by hand to the condition shown in Figures 11 and 12, whereupon the partly completed box is placed in one of the box racks 22 of the tempering table. The second operator bends the end walls 12 and end wall extensions 13 downward and folds the said end wall eX- tensions 13 against the side wall flaps 14 at the inside ends of the box as illustrated by Figures 13 to 16 inclusive. The said second operator then removes the box from said box form 22 of the tempering table and inserts the box between gauge blocks 53 and over the pressure jaws 48 and formers 49. The operator then depresses the foot pedal 65 causing the said pressure jaws 48 to operate to press the formers 48 against the inside ends of the box thus completing the box.

In the operation of inserting the box between said gauge blocks 53, edges of the side walls of the box will force downward the ends of arms 52 hinged on pins 6|, thus compressing springs 64. The operator holds the box down in position until the pressing operation has been performed. The design of said springs 64 is such that when the box is released the said springs 64 acting through arms 62 will eject the box upward, thus aiding the operator in removing the completed box from the machine.

In the operation of the machine power shaft 2 rotates continuously while boxes are being made. Adhesive applying roll II and pressing roll I5 rotate continuously, being driven from power shaft 2 by means of bevel gears 3 and 4, and pulleys 6 and I connected by belt 8. Gears l2 and I3 serve' to rotate said adhesive applying roll H and pressing roll l5 at uniform peripheral speed. In applying adhesive to the blank the portion of the blank which is to be adhesively treated is fed by hand between adhesive applying roll II and pressing roll l5, in so doing adhesive applying roll I l, which revolves in liquid adhesive contained in adhesive pot 10, Will deposit a layer of adhesive upon the underside of the portion of the blank contacting the said adhesive applying roll.

The tempering table serves to hold the blank in partly folded condition while the adhesive on said blank is being tempered by permitting it to be exposed to the air for a short period. The tempering table also serves to convey the partly formed boxes from one operator to the other by manually swinging the said tempering table on its pivot. The pressing mechanism is driven from power shaft 2 by means of pulley 28 (Fig. 5) and belt 29 which drives fly-wheel 3B which in turn drives pinion 32 by means of shaft 3|. Gear 33 is driven by pinion 32, thus said gear 33 rotates made. The eccentric 36 mounted free on said pin 35 is at rest except when the foot pedal 65 is depressed. It is obvious that the said eccentric 36 operates the eccentric arm 43 with an up and down motion when the pressing operation is being performed. When it is required to operate the pressing mechanism, the operator depresses foot pedal 65 thus turning shaft 66 secured thereto, cam lever 68 which is secured to said shaft 66 will cause the cam 69, fastened to the end of said cam lever 68, to become disengaged with the driving pin 48 which is retained in recess 38 of the eccentric 36. The said driving pin 40 will then be acted upon by spring 39 which will cause 'said driving pin to enter the recess 34 in the hub of gear 33 with the result that eccentric 36 will be caused to rotate with said gear 33, thus the eccentric arm 43 will be carried up and down with each revolution of the eccentric 36.

The upward motion imparted to the eccentric 45 continuously about pm 35 wh1le boxes are being box to be acted upon. The outside ends of the box are held in place by blocks 53.

When it is desired to stop the pressing operation the operator releases foot pedal 65 whereupon tension spring 61 will raise the said foot pedal with the result that shaft 66 will turn, thus causing the cam 69, fastened to cam lever 68, to enter the slot 4| in driving pin 40. The motion of eccentric 36 will cause the driving pin 40, the slot ii of which is engaged by cam 69, to follow the curve of the cam resulting in the driving pin 40 being drawn back from engagement With gear 33. The motion of the eccentric 36 will immediately stop because in so drawing the driving pin 40 from engagement with the gear 33 the connection with the driving power is broken.

It will be apparent from the foregoing explanation that when the foot pedal 64 is depressed the pressure jaws 48 will operate to approach and recede from gauge blocks 52 with each revolution of the eccentric 35, and conversely when the said foot pedal is released, the motion of said pressure jaws will stop.

The pressing mechanism is designed to be quickly changed to make boxes of difierent sizes. This is accomplished by having the proper sizes of formers 49, guide bars 51 and spacer blocks 52 for each size of box required to be made. It is obvious that different sizes of boxes may be made by changing these parts and suitable adjusting gauge blocks 53.

Having described my invention, I claim:

1. In a machine for making set-up boxes, a pressure applying mechanism comprising, guides for holding the side walls of a box in position, fixed gauge blocks for supporting the outside ends of the box, and devices operating on the inside of the box to firmly press the ends of the box against the said gauge blocks.

2. In a machine for making set-up boxes, a pressure applying mechanism comprising, fixed auge blocks for supporting the outside ends of the box to be pressed, and devices operating on the inside of the box to firmly press the ends of the box against the said gauge blocks.

3. In a machine for making set-up boxes, a pressure applying mechanism comprising, guides for holding the side walls of a box in position, fixed gauge blocks adjacent to outside ends of the box, and devices operating on the inside of the box to simultaneously press the ends of the box firmly against the said gauge blocks.

4. In a machine for making set-up boxes, a pressure applying mechanism comprising, stationary gauge blocks between which the box to be pressed is placed in inverted position, and means to simultaneously press the ends of the box firmly against the said gauge blocks.

5. In a machine for making boxes, comprising, a. pressure applying mechanism, fixed gauge blocks between which the box to be pressed is placed in inverted position, means to simultaneously press the ends of the box firmly against the said gauge blocks, and spring actuated means I to automatically eject the box when the pressing operation is completed.

MELVIN H. SIDEBOTHAM. 

